I have a 2002 KX250 that is completely stock and has NEVER been tinkered with at ALL.
I live in VT and its usually about 70-85F when I go riding.
I noticed that sometimes when I first start my bike it will foul the plug before it is warmed up, but never has fouled when after it is all warmed up.
Also, when I check the plug, no matter what RPM I have been riding at, etc., the insulator is always dark black and its practicly dripping oil. Also, smoke is always just barely visible at all the different RPM's if you stop and watch for it, and this is using klotz oil.
Lastly, I noticed that if you ride around at low RPM's a little bit, then go into the powerband, it will sort of skip/hesitate once it hits the end of the high powerband (when it really starts winding out), but after you do that a couple times it cleans itself out then doesn't skip no matter HOW much you wind it up. Obviously its loading up with gas from being to rich.
Other than this the bike runs & idles utterly perfect though.
Anyways, my question is this: do you think I can fix this by just putting the clip on the main jet up one click? that is what the manual says to do (along with the person I bought the bike from). Also, will I have to tinker with the air screw if I do this? And is there only 1 airscrew on the carb? Becuase the only one I know of is the one on the outside of the carb, which is set at 1 and 1/4 turns out, as suggested by the manual.
I live in VT and its usually about 70-85F when I go riding.
I noticed that sometimes when I first start my bike it will foul the plug before it is warmed up, but never has fouled when after it is all warmed up.
Also, when I check the plug, no matter what RPM I have been riding at, etc., the insulator is always dark black and its practicly dripping oil. Also, smoke is always just barely visible at all the different RPM's if you stop and watch for it, and this is using klotz oil.
Lastly, I noticed that if you ride around at low RPM's a little bit, then go into the powerband, it will sort of skip/hesitate once it hits the end of the high powerband (when it really starts winding out), but after you do that a couple times it cleans itself out then doesn't skip no matter HOW much you wind it up. Obviously its loading up with gas from being to rich.
Other than this the bike runs & idles utterly perfect though.
Anyways, my question is this: do you think I can fix this by just putting the clip on the main jet up one click? that is what the manual says to do (along with the person I bought the bike from). Also, will I have to tinker with the air screw if I do this? And is there only 1 airscrew on the carb? Becuase the only one I know of is the one on the outside of the carb, which is set at 1 and 1/4 turns out, as suggested by the manual.